Measurement Computing PCI-QUAD04: 4-Channel Quadrature Encoder Input Board
The Measurement Computing PCI-QUAD04 is a cost-effective, high-performance PCI board designed to interface seamlessly with industry-standard quadrature encoders. It offers precise position and motion tracking capabilities, making it ideal for applications requiring accurate encoder input processing.
Key Features
- Four Input Channels: Supports up to four quadrature encoder inputs, accommodating both single-ended and differential configurations.
- 24-Bit Counters: Each channel is equipped with a 24-bit counter, ensuring high-resolution counting for precise measurements.
- Programmable Index Functionality: Offers customizable index features to enhance flexibility in various applications.
- Multiple Counter Modes: Supports multiple counting modes, including non-quadrature cascaded counting up to 96 bits, allowing for versatile operation.
- Integrated Digital Filtering: Utilizes digital filtering and an 8-bit counter prescaler to minimize noise and improve signal integrity.
- Interrupt Management: Features an interrupt controller for efficient and powerful interrupt handling capabilities.
Software Support
The PCI-QUAD04 is compatible with Measurement Computing’s Universal Library, providing support for various programming environments, including Visual Studio® and Visual Studio® .NET. This includes examples for Visual C++®, Visual C#®, Visual Basic®, and Visual Basic® .NET. Additionally, the InstaCal software utility facilitates easy installation, calibration, and testing of the board.
Specifications
- Counter Type: LS7266R1 24-bit Dual-axis Quadrature Counter
- Quadrature Mode: Clock frequency up to 1.2 MHz
- Count Mode: Clock frequency up to 5 MHz
- Power Consumption: +5 V at 325 mA typical, 460 mA maximum
The PCI-QUAD04 is a robust solution for applications requiring precise quadrature encoder input processing, offering flexibility and reliability in a compact PCI form factor.

















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